| 不同覆盖方式对旱作水稻氮肥肥效的影响 |
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| 引用本文： | 艾应伟,刘学军,张福锁,毛达如,曾祥忠,吕世华,潘家荣.不同覆盖方式对旱作水稻氮肥肥效的影响[J].植物营养与肥料学报,2003,9(4):416-419. |
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| 作者姓名： | 艾应伟 刘学军 张福锁 毛达如 曾祥忠 吕世华 潘家荣 |
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| 作者单位： | 1.中国农业大学植物营养系农业部植物营养学重点实验室教育部植物土壤相互作用重点实验室 北京100094; |
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| 基金项目： | 国家基础研究发展规划项目(G1999011707)资助. |
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| 摘 要： | 通过田间小区和微区框15N示踪试验,研究了水稻旱作秸秆覆盖、旱作薄膜覆盖、旱作秸秆和薄膜双覆盖、旱作无覆盖与常规灌溉栽培方式的氮素吸收利用特性。结果表明,水稻常规灌溉栽培的氮肥利用率(15.30%)显著低于旱作无覆盖(23.56%)和旱作薄膜覆盖(23.10%);旱作秸秆薄膜双覆盖(19.07%)和旱作秸秆覆盖(18.41%)显著低于旱作溥膜覆盖。旱作水稻根、茎叶、子粒各器官的NDFF值(即各器官N含量来自化肥N所占的百分率)是覆盖栽培小于无覆盖栽培;而旱作栽培普遍高于常规灌溉栽培。旱作条件下,水稻产量覆盖栽培高于无覆盖栽培;无覆盖条件下,常规灌溉栽培显著高于旱作栽培。
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| 关 键 词： | 水稻 旱作 覆盖方式 氮肥利用率 |
| 文章编号： | 1008-505X(2003)04-0416-04 |
| 修稿时间： | 2002年9月17日 |
Effect of different covering methods on nitrogen fertilizer use efficiency in dryland rice |
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| AI Ying wei,LIU Xue jun,ZHANG Fu suo,MAO Da ru,ZEN G Xiang zhong,Lü Shi hua,PAN Jia rong.Effect of different covering methods on nitrogen fertilizer use efficiency in dryland rice[J].Plant Nutrition and Fertilizer Science,2003,9(4):416-419. |
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| Authors: | AI Ying wei LIU Xue jun ZHANG Fu suo MAO Da ru ZEN G Xiang zhong Lü Shi hua PAN Jia rong |
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| Institution: | 1.Dept. of Plant Nutrition;CAU;Key Lab. of Plant Nutrition;MOA;Key Lab. of Plant Soil Interactions;MOE;Beijing 100094;China; |
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| Abstract: | Character of utilization rate of nitrogen fertilizer of rice by 15N tr acer techniques were studied under the conditions of dryland rice covered with s traw, plastic film , straw and plastic film, without cover and normal irrigation cultivation of rice in the field. The results showed that the NUR of normal irr igation cultivation(15.30%) was lower than that dryland rice without cover (23.56%)and dryland rice covered with plastic film (23.10%); dryland rice covered with plastic film was higher than that with straw (19.07%) and straw and film ( 18.41%). NDFF value of root, stem and grain under the condition of dryland ric e with cover were lower than that without cover, and the rice dryland cultivation was significantly higher normal irrigation cultivation. Under the condition of dryland, the rice yield with cover was higher than that without cover, however, the yield of normal irrigation cultivation was higher than that dryland under wi thout cover condition. |
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